﻿// 构造函数，变量为15位或者18位的身份证号码 
function clsIDCard(CardNo) {
    this.Valid = false;
    this.ID15 = '';
    this.ID18 = '';
    this.Local = '';
    if (CardNo != null)
        this.SetCardNo(CardNo);
}


// 设置身份证号码，15位或者18位 
clsIDCard.prototype.SetCardNo = function (CardNo) {
    this.ID15 = '';
    this.ID18 = '';
    this.Local = '';
    CardNo = CardNo.replace(" ", "");
    var strCardNo;
    if (CardNo.length == 18) {
        pattern = /^\d{17}(\d|x|X)$/;
        if (pattern.exec(CardNo) == null)
            return;
        strCardNo = CardNo.toUpperCase();
    } else {
        pattern = /^\d{15}$/;
        if (pattern.exec(CardNo) == null)
            return;
        strCardNo = CardNo.substr(0, 6) + '19' + CardNo.substr(6, 9)
        strCardNo += this.GetVCode(strCardNo);
    }
    this.Valid = this.CheckValid(strCardNo);
}
// 校验身份证有效性 
clsIDCard.prototype.IsValid = function () {
    return this.Valid;
}
// 返回生日字符串，格式如下，1981-10-10 
clsIDCard.prototype.GetBirthDate = function () {
    var BirthDate = '';
    if (this.Valid)
        BirthDate = this.GetBirthYear() + '-' + this.GetBirthMonth() + '-'
            + this.GetBirthDay();
    return BirthDate;
}
// 返回生日中的年，格式如下，1981 
clsIDCard.prototype.GetBirthYear = function () {
    var BirthYear = '';
    if (this.Valid)
        BirthYear = this.ID18.substr(6, 4);
    return BirthYear;
}
// 返回生日中的月，格式如下，10 
clsIDCard.prototype.GetBirthMonth = function () {
    var BirthMonth = '';
    if (this.Valid)
        BirthMonth = this.ID18.substr(10, 2);
    if (BirthMonth.charAt(0) == '0')
        BirthMonth = BirthMonth.charAt(1);
    return BirthMonth;
}
// 返回生日中的日，格式如下，10 
clsIDCard.prototype.GetBirthDay = function () {
    var BirthDay = '';
    if (this.Valid)
        BirthDay = this.ID18.substr(12, 2);
    return BirthDay;
}
// 返回年龄
clsIDCard.prototype.GetAge = function () {
    return jsGetAge(this.GetBirthDate());
}
// 返回性别，1：男，0：女 
clsIDCard.prototype.GetSex = function () {
    var Sex = '';
    if (this.Valid)
        Sex = this.ID18.charAt(16) % 2;
    return Sex=='1'?'男':'女';
}

// 返回15位身份证号码 
clsIDCard.prototype.Get15 = function () {
    var ID15 = '';
    if (this.Valid)
        ID15 = this.ID15;
    return ID15;
}

// 返回18位身份证号码 
clsIDCard.prototype.Get18 = function () {
    var ID18 = '';
    if (this.Valid)
        ID18 = this.ID18;
    return ID18;
}

// 返回所在省，例如：上海市、浙江省 
clsIDCard.prototype.GetLocal = function () {
    var Local = '';
    if (this.Valid)
        Local = this.Local;
    return Local;
}

clsIDCard.prototype.GetVCode = function (CardNo17) {
    var Wi = new Array(7, 9, 10, 5, 8, 4, 2, 1, 6, 3, 7, 9, 10, 5, 8, 4, 2, 1);
    var Ai = new Array('1', '0', 'X', '9', '8', '7', '6', '5', '4', '3', '2');
    var cardNoSum = 0;
    for (var i = 0; i < CardNo17.length; i++)
        cardNoSum += CardNo17.charAt(i) * Wi[i];
    var seq = cardNoSum % 11;
    return Ai[seq];
}

clsIDCard.prototype.CheckValid = function (CardNo18) {
    if (this.GetVCode(CardNo18.substr(0, 17)) != CardNo18.charAt(17))
        return false;
    if (!this.IsDate(CardNo18.substr(6, 8)))
        return false;
    var aCity = {
        11: "北京",
        12: "天津",
        13: "河北",
        14: "山西",
        15: "内蒙古",
        21: "辽宁",
        22: "吉林",
        23: "黑龙江 ",
        31: "上海",
        32: "江苏",
        33: "浙江",
        34: "安徽",
        35: "福建",
        36: "江西",
        37: "山东",
        41: "河南",
        42: "湖北 ",
        43: "湖南",
        44: "广东",
        45: "广西",
        46: "海南",
        50: "重庆",
        51: "四川",
        52: "贵州",
        53: "云南",
        54: "西藏 ",
        61: "陕西",
        62: "甘肃",
        63: "青海",
        64: "宁夏",
        65: "新疆",
        71: "台湾",
        81: "香港",
        82: "澳门",
        91: "国外"
    };
    if (aCity[parseInt(CardNo18.substr(0, 2))] == null)
        return false;
    this.ID18 = CardNo18;
    this.ID15 = CardNo18.substr(0, 6) + CardNo18.substr(8, 9);
    this.Local = aCity[parseInt(CardNo18.substr(0, 2))];
    return true;
}

clsIDCard.prototype.IsDate = function (strDate) {
    var r = strDate.match(/^(\d{1,4})(\d{1,2})(\d{1,2})$/);
    if (r == null)
        return false;
    var d = new Date(r[1], r[2] - 1, r[3]);
    return (d.getFullYear() == r[1] && (d.getMonth() + 1) == r[2] && d
        .getDate() == r[3]);
}

function jsGetAge(strBirthday) {
    var returnAge;
    var strBirthdayArr = strBirthday.split("-");
    var birthYear = strBirthdayArr[0];
    var birthMonth = strBirthdayArr[1];
    var birthDay = strBirthdayArr[2];

    d = new Date();
    var nowYear = d.getFullYear();
    var nowMonth = d.getMonth() + 1;
    var nowDay = d.getDate();

    if (nowYear == birthYear) {
        returnAge = 0;//同年 则为0岁
    }
    else {
        var ageDiff = nowYear - birthYear; //年之差
        if (ageDiff > 0) {
            if (nowMonth == birthMonth) {
                var dayDiff = nowDay - birthDay;//日之差
                if (dayDiff < 0) {
                    returnAge = ageDiff - 1;
                }
                else {
                    returnAge = ageDiff;
                }
            }
            else {
                var monthDiff = nowMonth - birthMonth;//月之差
                if (monthDiff < 0) {
                    returnAge = ageDiff - 1;
                }
                else {
                    returnAge = ageDiff;
                }
            }
        }
        else {
            returnAge = -1;//返回-1 表示出生日期输入错误 晚于今天
        }
    }
    return returnAge;//返回周岁年龄
}